COMPLIANCE INFO_PR0440063_1990-2019

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WASTE DISCHARGE REQUIREMENTS -3- MUSCO OLIVE PRODUCTS, INC. CLASS II SURFACE IMPOUNDMENTS SAN JOAQUIN COUNTY 13. Pond A has 13 lysimeters placed five feet below the clay liner, 5 lysimeters placed ten feet below the liner, and 1 background lysimeter placed at a depth of five feet, approximately 250 feet southwest of the ponds. Pond B has 13 lysimeters placed five feet below clay liner, 7 lysimeters placed ten feet below the liner, and 1 background lysimeter placed at a depth of five feet located approximately 450 feet northwest of the ponds. DESCRIPTION OF THE SITE 14. The beneficial uses of the ground water beneath the site are: industrial, municipal, domestic and agricultural supply. There are six wells within 5,000 feet of the site, screened between 80 and 600 feet below ground surface. The uses of water from these wells are domestic, agricultural and industrial supply. 15. Surface water drainage from the site flows to an unnamed, dry creek bed which flows eastward toward the valley floor. This creek bed does not empty into another waterway, but rather disappears on the valley floor east of the site. 16. The facility receives less than 15 inches of precipitation per year. The mean evaporation rate is greater than 100 inches per year. 17. The soils at the facility are predominately clay,clayey silt and silty clay. Two thirds of the western portion of the facility is located on the materials from the Pliocene period which consist of sedimentary deposits of the Tulare and Laguna formations. The other one third (eastern) is situated on the Pleistocene nonmarine sediments. Surface soils are of the Ambrose Clay Formation (Calla-Carbona Complex, Carbona Clay Loam)consisting of dark brown or dark grayish-brown strongly developed secondary material from sandstones, shales, and other sedimentary rocks and tend to have low permeability rates. 18. The nearest active Holocene fault is the Greenville Fault,which is 4.5 miles away. The site is also within one mile of the ends of the relatively small Midway and Black Butte faults. The threat of ground rupture is highly unlikely. 19. The 24-hour, 1,000 year storm event at the Tracy pumping station, approximately five miles northeast of the plant is 4.46 inches. CEQA AND OTHER CONSIDERATIONS 20. This action to revise WDRs for this facility is exempt from the provisions of the California Environmental Quality Act(Public Resources Code Section 21000, et seq.), in accordance with Title 14, CCR, Section 15301. 21. This Order implements a. the Water Quality Control Plan,Third Edition,for the Sacramento River Basin and the San Joaquin River Basin; b. the prescriptive standards and performance goals of Chapter 15, Division 3,Title 23 of the California Code of Regulations,effective 27 November 1984, and subsequent revisions.